*BSD News Article 24107


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From: terry@cs.weber.edu (A Wizard of Earth C)
Newsgroups: comp.os.386bsd.questions,comp.unix.osf.osf1,comp.periphs.scsi
Subject: Re: Driver for Adaptec 274xT
Date: 17 Nov 1993 07:35:17 GMT
Organization: Weber State University, Ogden, UT
Lines: 43
Message-ID: <2cck7l$npn@u.cc.utah.edu>
References: <Egsycda00WBO06zWdV@andrew.cmu.edu> <CGEzo0.GJr@tsoft.net>
NNTP-Posting-Host: cs.weber.edu

In article <CGEzo0.GJr@tsoft.net> tedm@tsoft.net (Ted Matsumura) writes:
]>adaptec
]> i
]> a
]> m
]> o
]> n
]> d
]>
]>just a coincidence?  you decide.
]
]I don't get it, what is the significance of "diamond" ?

This is a joke, based on both Adaptec and Diamond not providing
programmming information for their cards so that non-proprietary
drivers could be written and distributed.  Diamond cards are not
supported directly by XFree86, perhaps the most popular X server
and programs set in existance, because Diamond refuses to give
out information on how to program their dot clocks for monitor
frequencies other than the defaults, unless you sign a
non-disclosure agreement that would prevent the source code from
being released.

Alternate monitor frequencies are required to support the higher
display resoloutions available via BIOS mode settings.  Because
Diamond will not allow this information out without non-disclosure
and because they have not written their INT 10 BIOS to operate
correctly in protected mode, it is impossible to get higher than
default VGA resoloution on a protected mode OS.


Similarly, Adaptec has reportedly told several programmers that
have inquired that programming information for their newer disk
controllers (such as the AHA2742 EISA controller and the version
of the same controller for embedded use on motherboards) will
not be made available except under non-disclosure.


					Terry Lambert
					terry@cs.weber.edu
---
Any opinions in this posting are my own and not those of my present
or previous employers.